CAREER: Synthesis and Structural Characterization of Lanthanide-Based Silicides and Germanides

职业：镧系硅化物和锗化物的合成和结构表征

• 批准号: 0743916
• 负责人: Svilen Bobev
• 金额: $ 53万
• 依托单位: University of Delaware
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-02-15 至 2014-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0743916&HistoricalAwards=false
• 关键词: CAREER; Synthesis; Structural; Characterization; Lanthanide

AbstractThis project aims to understand the relationships among the composition, structure, and electronic structure in complex intermetallic compounds and their properties. Using rationally designed syntheses, we will seek to develop new classes of intermetallic compounds that are based on the lanthanide elements and the heavier carbon analogues, Silicon and Germanium. This research will involve thorough and systematic crystallographic studies (single- crystal and powder X-ray and/or neutron diffraction) of the complicated crystal chemistry and the possible stoichiometry breadths of many of these phases. The derived principles will be then applied for rationalization of the structures of more complex ternary phases and the corresponding phase equilibria. The fundamental goal of these investigations will be gaining better understanding of the structural relations together with the effect they have on the magnetic and electronic properties. Ultimately, the comprehensive knowledge gained from these studies will be used as a foundation for the reasoned tuning of properties of interest of the newly synthesized materials. It is anticipated that this project will advance the P.I.'s group to the forefront of this research and will allow the principle investigator to make significant contributions to the fast growing field of solid-state and materials chemistry.%%%The efforts outlined in this proposal are broadly aimed at establishing the fundamentals and the infrastructure for solid-state and materials chemistry education and research within the Department, the College and the University of Delaware as a whole. The proposed studies are highly interdisciplinary, encompassing chemistry, physics, and materials science, and will give excellent training in solid-state research to graduate and undergraduate students. Special attention will be paid to recruiting students from traditionally under- represented backgrounds and encouraging their active participation in the project development and advancement. This will allow them to be more competitive on the job market by going on to various careers and actively contributing to the nation's scientific progress. Also, the successful outcome of the research program discussed in the proposal is anticipated to boost the scientific presence of the University of Delaware in the solid-state chemistry arena, and to have a direct positive impact on intra- and inter-departmental collaborations across campus.

摘要本计画旨在了解复杂金属间化合物的组成、结构及电子结构与其性质之间的关系。使用合理设计的合成，我们将寻求开发基于镧系元素和较重的碳类似物，硅和锗的金属间化合物的新类别。 这项研究将涉及对复杂的晶体化学和许多这些相的可能化学计量宽度的彻底和系统的晶体学研究（单晶和粉末X射线和/或中子衍射）。导出的原则，然后将适用于更复杂的三元相的结构和相应的相平衡的合理化。 这些研究的基本目标是更好地理解结构关系以及它们对磁性和电子性质的影响。 最终，从这些研究中获得的全面知识将被用作合理调整新合成材料的感兴趣性质的基础。 预计该项目将推动P.I.的团队走在这项研究的最前沿，并将使主要研究人员为快速发展的固态和材料化学领域做出重大贡献。本提案中概述的努力主要是为了在整个部门，学院和特拉华州大学内建立固态和材料化学教育和研究的基础和基础设施。拟议的研究是高度跨学科的，包括化学，物理和材料科学，并将在固态研究的研究生和本科生提供良好的培训。 将特别注意从传统上代表性不足的背景中招募学生，并鼓励他们积极参与项目的开发和推进。 这将使他们在就业市场上更具竞争力，可以从事各种职业，积极为国家的科学进步做出贡献。 此外，该提案中讨论的研究计划的成功结果预计将促进特拉华州大学在固态化学竞技场的科学存在，并对校园内和跨部门的合作产生直接的积极影响。